$(document).ready(function() {
  $('#blog_medium_url').uploadify({
    'swf'      : '/plugins/uploadify/uploadify.swf',
    'uploader' : '/plugins/uploadify/uploadify.php',
    'folder'    : '/uploads/images_news/',
    'cancelImg' : '/plugins/uploadify/uploadify-cancel.png',
    'simUploadLimit' : 10,
    'auto'      : true,
    'multi'     : true,     
    'uploadLimit': 10,
    'buttonText': 'Seleccionar',                 
    'formData'      : {'id_new' : $("#blog_medium_new_id").val()},       
    'onUploadStart' : function(file) {
            $("#blog_medium_url").uploadify("settings", "id_new", 2);
    }
  });
});